关键词: moran's I, Kriging插值, 采样, 土地利用程度, 石柱县

Abstract: [Objective] To compare the effect of different sampling methods and different sampling scales on spatial distribution of land utilization degree and accuracy of statistics. [Method] Comparatively analyze the land utilization degree in Shizhu county, Chongqing municipality based on moran's I and Kriging according to different yardsticks of sampling. [Results] Moran's I index is positive under every different yardstick of sampling, and the results of Kriging interpolation show that different methods of sampling and different sampling scales have certain effect on spatial distribution of land utilization degree and accuracy of statistics. [Conclusion] The conclusion includes:First, the land utilization degree in Shizhu has positive overall space autocorrelation under every yardstick of sampling. Second, the change of yardstick has great effect on the data of land utilization, and under the same method of sampling, the smaller sampling area, the more accurate interpolation is. In a relatively small sampling area, autocorrelation in partial space can accurately locate the regional assembling situation of the land utilization degree.

Key words: moran's I, Kriging interpolation, samples, land use utilization, Shizhu county